• 제목/요약/키워드: Jib

검색결과 442건 처리시간 0.03초

이중 링크 형식 수평 인입 집 크레인의 피로 해석, 신뢰도 및 수명 예측에 관한 연구 (A Study on Fatigue Analysis, Reliability and Life Expectancy of a Double Link Type Level Luffing Jib Crane)

  • 허철원;문덕홍
    • 한국안전학회지
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    • 제16권4호
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    • pp.65-73
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    • 2001

  • This paper is a study on the fatigue analysis using BS5400 Part10(1980), code of practice for fatigue for a double link type level luffing jib crane which has been operated since the crane was built in 1985 at a domestic pier. South Korea. In addition, on the basis of the design lift due to fatigue analysis and the number of cracks detected from the nondestructive test the structural reliability and the residual life of the crane is predicted by evaluating the expected development of detectable fatigue oracle during the next five to ten years using Paris's Law for predicting fatigue crack growth and Gaussian probability density function to be reasonable for stress ranges below the mean values determined by laboratory tests. The statistical data used for the analysis of the structural reliability and life expectancy is given in the above referred code.

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대형 해상크레인의 구조 기본 설계 (A Basic Structural Design for Large Floating Crane)

  • 박찬후;김병우;하문근;전민성
    • 한국해양공학회지
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    • 제19권1호
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    • pp.71-76
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    • 2005

  • This paper describes basic structural design for the large floating crane barge of fixed undulation type. Structural analysis was performed separately after dividing the floating crane into two parts, The crane part was composed of jib boom, back stay and back tower and the barge part supported the crane part. The structural strength for jib boom structural members are in compliance with JIS B 8821 and scantling of all barge structural members are in compliance with the requirement of KR (Korean Register of Shipping) Steel Barges and Rules for Classification of Steel Ships. For the structural analysis of large floating crane, MSC/NASTRAN and MSC/PATRAN software were used.

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